JP2002097677A - Rainwater separator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To introduce water to a rainwater storage tank by removing a foreign matter such as smoke dust and bird droppings in gathered water so as not to clog an outflow hole in the initial stage of a rainfall and at low rainfall quantity time per time. SOLUTION: In this rainwater separator B5 for introducing the water to the storage tank by removing the foreign matter in gathered rainwater, the rainwater separator is composed of a cylindrical first storage chamber 5 for storing the gathered water, a taper pipe 7 arranged in the bottom part and having a lower part of a small diameter, a cylindrical second storage chamber 6, the outflow hole 8 arranged in the bottom part, a float 9 vertically movably inserted into the first storage chamber 5, a valve seat part 9c for contacting with and separating from a valve seat surface 7c of the float 9, a noncontact part forming means arranged in the valve seat part 9c and forming a noncontact part on the valve seat surface 7c at seating time, a straight line bar-shaped cleaning bar 10 for vertically penetrating through the outflow hole 8 and a recess-projection part arranged in the outer diameter. A branch pipe 4 communication with the storage tank is arranged in an upper part of the first storage chamber 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rainwater separator for removing foreign matter in rainwater such as dust and bird droppings and using the collected rainwater from a roof of a building to guide the water to a storage tank. .

[0002]

2. Description of the Related Art FIG. 7 shows an overall configuration example of a conventional rainwater storage device that collects rainwater falling on a roof R and uses it for a flush toilet tank T for home use. In such an example, since it is necessary to remove foreign matter such as dust and bird droppings on the roof R mixed with the rainwater and store the water as good quality water, the initial rainwater after several days of no rainfall and the rainwater in a light rain state Is to be discarded.

[0003] Conventionally, in rainwater after several days without no rainfall, 1.5
It is known that high quality water free of the foreign matter is obtained after the rainfall of 2 mm to 2 mm. It is also known that in the case of light rain, even if rainfall continues, foreign matter is unavoidably mixed into the water collection.

For this purpose, in the conventional example shown in FIG. 7, rainwater from the roof R is temporarily stored in a separator A5 shown in detail in FIG. 8 via a water pipe A4 connected to the upper downspout 1. Here, the initial rainwater mixed with foreign matter is discharged from the bottom outflow hole 8 of the separator A5 to the underground rainwater Cm through the lower downspout 11. Also, light rain below a predetermined value is continuously discharged from the separator A5.

[0005] High-quality rainwater free from foreign matter exceeding a predetermined amount and exceeding a waste amount flows into an overflow pipe A13 provided above the separator A5, and is introduced into the rainwater storage tank V from the first outlet 15. And stored. And if necessary,
Water is supplied to the flush toilet tank T by the pressurized water supply pump P.

In FIG. 8, the separator A5 is connected to the lower part of a water pipe A4 composed of a slide pipe 2, an overflow branch pipe 4 and a net 3 connected to the upper downspout 1. I have. The separator A5 is connected to a cylindrical first straight pipe 5a fitted to the lower part 4b of the overflow branch pipe 4, a straight pipe part 7a fitted to the lower part of the first straight pipe 5a, and a lower part thereof. A tapered tube 7 formed by the tapered portion 7b, and a tapered portion 7b
And a bottom member 8 having a small outflow hole 8 at the bottom which is fitted at the top to the second straight pipe 6a fitted at the bottom of the second straight pipe 6a.
A.

The interior of the first straight pipe 5a forms the upper rainwater storage chamber 5, and the tapered portion 7b and the second straight pipe 6a form the lower rainwater storage chamber 6.

This separator A5 operates as follows. Rainfall after no rainfall is collected by washing away and mixing foreign matter on the roof R, and is firstly stored in the lower rainwater storage chambers 5, 6 above the separator A5 via the upper downspout 1 and the water conduit A4. Along with
It is discarded through the outflow hole 8.

[0009] Further, the continuous light rain is discharged and discharged at a flow rate of 2 mm / hour or less by a flow hole 8 having a diameter of 3 mm, for example, which can flow a predetermined flow rate of 2 mm / hour, for example.
When the amount of rainfall exceeds that, it overflows the upper rainwater storage chamber 5 and flows from the overflow branch pipe 4 to the overflow pipe A13. Reference numeral 16 denotes a second outlet, which is an overflow pipe for rainwater exceeding the amount taken out at the first outlet.

However, in reality, the above-mentioned foreign matter separating function at the beginning of rainfall and at the time of low precipitation per hour fulfills its intended function because the outflow hole 8 is clogged and blocked by dust and bird droppings. Can not do. Further, if the mesh of the net 3 of the upstream water pipe A4 is made fine in order to avoid clogging and clogging in the outflow hole 8, clogging in the net 3 occurs, frequent washing of the net is required, and basic removal of foreign matter is performed. Problem is not solved.

The present invention proposes a rainwater separator which does not block the outlet holes 8 for discharging foreign matter from the lower rainwater storage chambers 5 and 6 and does not cause blockage.

[0012]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above-mentioned problems of the prior art, and includes foreign matter in water collection such as dust and bird droppings at the beginning of rainfall and at a low rainfall per hour. It is an object of the present invention to provide a rainwater separator that can remove water so as not to block the outflow hole and guide the water to a rainwater storage tank. In addition, the present invention reduces the actual area to reduce the amount of waste and reduces the amount of wastewater, and saves rainwater during low rainfall per hour, although the outflow hole diameter was conventionally limited to, for example, 3 mm or more in order to avoid clogging of foreign matter. Another object is to provide a rainwater separator that can be used.

[0013]

SUMMARY OF THE INVENTION A rainwater separator of the present invention comprises:
In a rainwater separator that removes foreign matter from collected rainwater and guides the collected water to a storage tank, a cylindrical first storage chamber for storing collected water and an inner surface provided at the bottom of the first storage chamber are valved. A tapered pipe having a small diameter formed on the bottom surface of the seat, a second cylindrical storage chamber connected to a lower part of the tapered pipe, and a second storage chamber.
An outflow hole provided at the bottom of the storage chamber, a float that is vertically movable into the first storage chamber, and a valve seat that is provided at the lower end of the float and that comes into contact with and separates from the valve seat surface. A non-contact portion forming means provided on the valve seat portion to form a non-contact portion between the valve seat surface and the valve seat surface at the time of seating; and a straight rod-shaped member attached to the axis of the float and vertically penetrating the outflow hole. A branch pipe, which includes a cleaning rod and an uneven portion provided on the outer diameter of the cleaning rod, is provided above the first storage chamber and connected to the storage tank.

In the above, the first storage chamber and the second storage chamber have a substantial capacity for storing initial rainwater, for example, rainfall of 1.5 to 2 mm, and the non-contact portion forming means is provided at the lower end of the float. Even when the valve seat portion is seated on the valve seat surface of the tapered pipe, it is not completely closed, and a part of the rainwater flows out from the first storage chamber to the second storage chamber. As described above, foreign matters such as dust and bird droppings mixed in rainwater several days after no rainfall are removed by discarding a predetermined amount of initial rainwater, and the subsequent high-quality rainwater is stored in the storage tank. In addition, in the case of light rain in which mixing of foreign matter cannot be avoided, a predetermined amount of rainwater is continuously discarded, and overflow water without foreign matter is stored in a storage tank. In addition, the outflow hole at the bottom of the second storage chamber is washed every rain by the vertical movement of the washing rod attached to the float to remove foreign substances and prevent clogging.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below with reference to the drawings.
A description will be given mainly of portions different from the portions described with reference to FIGS. 7 and 8 showing the prior art. It should be noted that the same reference numerals are used for parts and components used in the prior art for those having the same form.

In FIG. 1 showing a rainwater separator B5 embodying the present invention, the rainwater separator B5 is composed of a slide pipe 2 connected to an upper downspout 1, an overflow branch pipe 4 and a net 3. It is connected to the lower part of the water pipe A4.

The rainwater separator B5 comprises a floating part A9 that floats up and down depending on the amount of water, and a non-moving part A5 that contains the floating part A9.

The non-moving part A5 includes a first cylindrical straight pipe 5a fitted into the lower part 4b of the overflow branch pipe 4, and the first straight pipe 5a.
(a), a tapered pipe (7) formed by a tapered portion (7b) connected to a lower portion of the straight pipe portion (7a) and a valve seat portion (7c) formed at the inner diameter of the tapered portion, and a lower portion of the tapered portion (7b) And a bottom member 8A fitted into the second straight pipe 6a at the top and having a small outflow hole 8 at the bottom. In addition, the outflow hole 8 corresponds to the cleaning rod 1 described later.
0, for example, 1.5 to 2.
It is formed with an area that allows rainwater of mm / hour to flow out.

The first straight pipe 5a and a part of the tapered portion 7b form an upper rainwater storage chamber 5 as a first storage chamber.
A second straight pipe 6a including a part of the tapered portion 7b forms a lower rainwater storage chamber 6 as a second storage chamber. The upper rainwater storage chamber 5 has a total volume excluding the volume of the float 9, which will be described later, in a volume capable of storing rainfall of 1.5 mm to 2 mm.

The floating portion A9 is composed of a float 9 which is vertically movable into the upper rainwater storage chamber 5, and a cleaning rod 10 which is fixed to the axis of the float 9 and has a linear rod shape.

The float 9 is formed in a substantially cylindrical shape as shown in FIGS.
It is formed in the valve seat part 9c which comes in contact with and separates from the valve seat surface 7c of b.

The valve seat 9c is formed with a plurality of non-contact portions 9d having a small diameter d1 corresponding to the outer diameter D of the float 9 as a bottom as a discontinuous portion forming means. The recess 9d forms the valve seat 9c. The passage is not completely closed even when seated on the valve seat surface 7c. 9h small hole in the axis of float 9
Is provided so that the cleaning rod of FIG. 5 or 6 is fixed with a nut 10a.

FIG. 4 shows another form of the discontinuous portion forming means, in which a plurality of convex portions 9t having a large diameter d2 corresponding to the outer diameter D of the float 9A as a peak are formed, and the convex portion 9t forms a valve. Even when the seat 9c is seated on the valve seat surface 7c, the flow path is not completely closed.

In FIGS. 3 and 4, the concave or convex portion is formed in the valve seat portion 9c of the float 9 to form the discontinuous portion forming means. However, the concave or convex portion is formed in the valve seat surface 7c of the tapered portion 7b. May be.

FIG. 5 shows a linear cleaning rod 10 fixed to the small hole 9h of the float 9. The cleaning rod 10
As shown in FIG. 1, a portion projecting below the float 9 always has a length projecting below the outflow hole 8 even when the float 9 moves up and down. As shown in FIG. 5, for example, a thread-shaped continuous projection S is formed on the cleaning rod 10 as an uneven portion.

FIG. 6 shows another example of the uneven portion, in which discontinuous protrusions B at equal intervals are formed.

The operation will be described below with reference to the drawings. FIG.
In the above, rainfall after no rainfall for several days is collected by mixing foreign matter on the roof R, and then flows into the upper rainwater storage chamber 5 of the rainwater separator B5 via the upper downspout 1 and the water pipe A4. Is done. Then, the float 9 is seated on the valve seat surface 7c and becomes watertight by the valve seat portion 9c, so that no direct current flows to the lower rainwater storage chamber 6.

The amount of rainwater mixed with foreign matter stored in the upper rainwater storage chamber 5 is supplied to the valve seat 9 c of the float 9.
And flows down into the lower rainwater storage chamber 6 through the recess 9d formed in the lower part. Then, the flowing water flows out along the cleaning rod 10 into the outflow holes 8.
From the lower downspout 11 is drained into rainwater Cm.

Here, when the flow rate flowing into the lower storage chamber 6 is larger than the flow rate flowing out of the outflow hole 8, the water level of the stored water stored in the lower storage chamber 6 rises. And the lower storage room 6
The air remaining at the upper part of the float 9 is gradually compressed by the water level, and the float 9 floats from the valve seat surface 7c.

Then, a part of the air in the lower storage chamber 6 due to the floating of the float 9 escapes into the upper rainwater storage chamber 5, so that the air pressure in the lower storage chamber 6 decreases. Then, the float 9 is seated again on the valve seat surface 7c due to the weight of the float 9 and the flowing water flowing down to the lower storage chamber 6. The floating and lowering of the float 9 are performed in a very short time. The above air pressure repetition fluctuation in the lower rainwater storage chamber 6 is repeated as long as there is residual air, and the float 9 moves up and down each time. Then, as the float 9 moves up and down, the outflow hole 8 is internally washed by the cleaning rod 10 and the uneven portion S or B thereof, thereby promoting the flow of foreign substances stagnating nearby.

With respect to the cleaning of the outflow hole 8 at the time of the above-mentioned initial rainfall, the following operation is performed in the case of light rainfall. The rainwater that continuously flows into the upper storage chamber 5 also flows down to the lower storage chamber 6 with the float 9 seated, and from this, through the outflow hole 8, a predetermined flow rate, for example, a rainfall amount of 1.5 mm / hour. Drain and drain rainwater equivalent to.

When the rainfall exceeds 1.5 mm / h, the inflow into the rainwater separator B5 exceeds the waste discharge through the outflow hole 8, and the water levels in the lower and upper storage chambers 6, 5 rise. It becomes overflow water. Then, the overflow water flows from the overflow branch pipe 4 to the overflow pipe A13 and further to the first outlet 15.
Is introduced into the rainwater storage tank V and stored there. In the above overflow, since the amount of rainfall exceeds 1.5 mm / hour, only high-quality rainwater containing no foreign matter is included.

Even in the case of light rain as described above, the float 9 moves up and down as the water level in the upper storage chamber 5 fluctuates. In addition, if the rainfall increases, the overflow water increases and the flowing water vibrates the float 9, and the cleaning of the outflow hole 8 by the cleaning rod 10 further increases.

The screw-shaped continuous projections S of the concave and convex portions provided on the cleaning rod 10 give a swirling flow to the flowing water and enhance washing of the outflow holes 8 while removing foreign substances, thereby removing foreign substances. I do. In addition, the discontinuous protrusions B of the peaks and valleys of the irregularities of the other forms change the cross-sectional area of the downflow channel of the outflow hole 8 and cause pulsation along with the removal of foreign substances, so that washing is further enhanced. I do.

[0035]

The effects of the present invention are listed below. (1) Floats and washing rods are provided on the rainwater separator, so that high-quality rainwater can be efficiently removed by removing initial rainwater containing foreign matter such as dust and bird droppings and rainwater during low rainfall several days after no rainfall. Can store well. (2) A float with a cleaning rod is interposed in the first storage chamber, and the outflow hole at the bottom of the second storage chamber is automatically cleaned by the vertical movement of the cleaning rod with the float up and down every time rainfall causes foreign matter. Can be automatically removed to prevent clogging. Therefore, maintenance man-hours for removing foreign matter are not required. (3) The valve seat surface provided at the lower end of the float is provided with irregularities as discontinuity forming means, so that it is not completely closed, and a small amount of flowing water always flows from the first storage chamber to the second storage chamber, and the float floats up. And the descent are repeated frequently, so that the foreign matter can be reliably removed by the cleaning rod. (4) Since the clogging and clogging does not occur by cleaning the outflow hole with the cleaning rod, the outflow hole can be made smaller than before. Therefore, it is possible to reduce the amount of discharged rainwater, increase the amount of water introduced to the storage tank, and improve the water collection efficiency. (5) Since the irregularities are provided on the outer diameter of the cleaning rod, foreign substances in the outflow holes are removed by contact, and a swirling flow is given to the flowing water or a pulsating flow is provided.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a rainwater separator embodying the present invention.

FIG. 2 is a side view of the float used in FIG.

FIG. 3 is a front view as viewed in the direction of the arrow X in FIG. 2;

FIG. 4 is a front view as viewed in the direction of the arrow X of another form of the float used in FIG. 1;

FIG. 5 is a side view of a cleaning rod provided with screw-shaped continuous protrusions as uneven portions attached to the float of FIG.

FIG. 6 is a side view of another type of cleaning rod in which corners and valleys at equal intervals are provided as uneven portions of discontinuous protrusions.

FIG. 7 is a configuration diagram of a rainwater storage device to which a conventional rainwater separator is attached.

FIG. 8 is a side sectional view showing details of a conventional rainwater separator used in FIG. 7;

[Explanation of symbols]

 B5: Rainwater separator A5: Separator A4: Water pipe A13: Overflow pipe V: Rainwater storage tank P: Pressurized water pump T: Rinse toilet tank 1. -Upper rain gutter 2-Slide pipe 3-Net 4-Overflow branch pipe 5-Upper rainwater storage chamber 6-Lower rainwater storage chamber 7-Tapered pipe 7c-Valve seat Surface 8 Outflow hole 9 Float 9c Valve seat 11 Lower rain gutter 15 First outlet 16 Second outlet

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshio Miyake 11-1 Haneda Asahimachi, Ota-ku, Tokyo Inside Ebara Works Co., Ltd. (72) Inventor Teruo Yamaguchi 11th Asahi-cho Haneda, Ota-ku, Tokyo No. 1 EBARA CORPORATION

Claims (1)

[Claims] 1. A rainwater separator for removing foreign matter in collected rainwater and guiding the collected water to a storage tank, wherein the rainwater separator is provided at a cylindrical first storage chamber for storing collected water, and at a bottom of the first storage chamber. A tapered pipe having an inner surface formed on a valve seat surface, a cylindrical second storage chamber connected to a lower portion of the tapered pipe, and an outflow hole provided at a bottom of the second storage chamber, A float which is freely vertically moved into the first storage chamber, and a valve seat provided at a lower end of the float and coming into contact with and separating from the valve seat surface;
A non-contact portion forming means provided on the valve seat portion to form a non-contact portion between the valve seat surface and the valve seat surface at the time of seating; and a linear rod-shaped cleaning attached to the axis of the float and vertically passing through the outflow hole. A rainwater separator comprising a rod and an uneven portion provided on an outer diameter of the cleaning rod, wherein a branch pipe communicating with the storage tank is provided above the first storage chamber. .